The 2014S2 is the ninth
GPK set to contain sketch cards numbering 1/1, one-of-a-kind,
found within hobby boxes inserted 1:? packs, or retail boxes inserted
1:171 packs. Die-Cut Sketch cards can be found within hobby boxes inserted
1:? packs, or within hobby collector edition boxes inserted 1:?. Several
artists worked on the sketch cards for this release, standard sketch
cards: Brent Engstrom, Fred Wheaton, Dustin Graham, Neil Camera, Mark
Pingitore, Joe Simko, Jeff Zapata, Layron DeJarnette, Steve Potter,
John Cebollero and Colin Walton. Besides the sketch cards located within
the boxes, the artists were given ten blank sketch card 'returns' from
the Topps company and once approved, could be kept, sold or auctioned
 these sketch cards are often more highly detailed and go for
a higher price.